Hostname: page-component-76fb5796d-25wd4 Total loading time: 0 Render date: 2024-04-26T14:37:49.465Z Has data issue: false hasContentIssue false

The susceptibility of tsetse flies to topical applications of insecticides. V.—Young adults of Glossina morsitans Westw. and some substituted N-methyl carbamates

Published online by Cambridge University Press:  10 July 2009

G. F. Burnett
Affiliation:
Tropical Pesticides Research Institute, Arusha, Tanganyika.

Extract

A series of six substituted phenyl N-methylcarbamate insecticides were applied to laboratory-reared adults of G. morsitans Westw. as solutions in di-isobutyl ketone. Only the 2-isopropoxy and the 3-isopropyl compounds were toxic at 0·0068 µg. per fly and the former, being apparently more active, was evaluated more fully. It was found to be equitoxic with γ BHC to young flies, and not synergised to any significant degree by five parts of piperonyl butoxide. Pregnant flies were considerably more tolerant than young flies to low dosages but not to high ones. The suggested explanation postulates that the developing larva is a potential site of detoxification but that the rapid action of high dosages results in the death of the parent before the insecticide can reach the larva and be detoxified by it.

Type
Research Paper
Copyright
Copyright © Cambridge University Press 1963

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Burnett, G. F. (1961 a). The susceptibility of tsetse flies to topical applications of insecticides. I. Young adults of Glossina morsitans Westw. and chlorinated hydrocarbons.—Bull. ent. Res. 52 pp. 531539.CrossRefGoogle Scholar
Burnett, G. F. (1961 b). … II. Young adults of Glossina morsitans Westw. and organophosphorus compounds, pyrethrins and Sevin.—Bull. ent. Res. 52 pp. 763768.Google Scholar
Burnett, G. F. (1962).… III. The effects of age and pregnancy on the susceptibility of adults of Glossina morsitans Westw.—Bull. ent. Res. 53 pp. 337345.CrossRefGoogle Scholar
Buxton, P. A. (1955). The natural history of tsetse flies.—Mem. Lond. Sch. Hyg. trap. Med. no. 10, 816 pp. London, Lewis.Google Scholar
Georghiou, G. P. & Metcalf, R. L. (1962). Carbamate insecticides: comparative insect toxicity of Sevin, Zectran, and other new materials.—J. econ. Ent. 55 pp. 125127.CrossRefGoogle Scholar
Hewlett, P. S. (1960). Joint action in insecticides.—In Metcalf, R. L. Ed. Advances in pest control research 3 pp. 2774. New York, Interscience.Google Scholar
Litchfield, J. T. & Wilcoxon, F. (1949). A simplified method of evaluating dose-effect experiments.—J. Pharmacol. 96 pp. 99113.Google ScholarPubMed
World Health Organization (1961). Testing and evaluation of insecticides.— W.H.O. Chron. 15 pp. 410413.Google Scholar